Publications by authors named "Denise Dettmering"
Article Synopsis
- Vertical land movements can create differences between regional relative sea-level changes and climate-driven absolute sea-level changes, which are accurately tracked by satellite since 1992.
- While vertical land motion is often modeled as a linear process, evidence suggests it can also be nonlinear due to factors like tectonic activity and groundwater extraction, leaving some uncertainties in sea-level rise projections.
- The study estimates that vertical land motion may cause relative sea-level changes of up to 50 cm by 2150, and not accounting for its nonlinear nature could increase uncertainty in projections by up to 1 meter at a regional level, emphasizing the need to consider these factors in future assessments.
The global reach-scale "ICESat-2 River Surface Slope" (IRIS) dataset comprises average and extreme water surface slopes (WSS) derived from ICESat-2 observations between October 2018 and August 2022 as a supplement to 121,583 reaches from the "SWOT Mission River Database" (SWORD). To gain full advantage of ICESat-2's unique measurement geometry with six parallel lidar beams, the WSS is determined across pairs of beams or along individual beams, depending on the intersection angle of spacecraft orbit and river centerline. Combining both approaches maximizes spatial and temporal coverage.
View Article and Find Full Text PDFCoastal studies of wave climate and evaluations of wave energy resources are mainly regional and based on the use of computationally very expensive models or a network of in-situ data. Considering the significant wave height, satellite radar altimetry provides an established global and relatively long-term source, whose coastal data are nevertheless typically flagged as unreliable within 30 km of the coast. This study exploits the reprocessing of the radar altimetry signals with a dedicated fitting algorithm to retrieve several years of significant wave height records in the coastal zone.
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